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add basic support for manual unzip and run, for the case zipapp is too large(2GB+ or 65M files +) #260

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add basic support for manual unzip and run, for the case zipapp is too large(2GB+ or 65M files +) #260

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15 changes: 10 additions & 5 deletions src/shiv/bootstrap/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -191,12 +191,17 @@ def bootstrap(): # pragma: no cover

# get a handle of the currently executing zip file
with current_zipfile() as archive:
if archive:
# create an environment object (a combination of env vars and json metadata)
env = Environment.from_json(archive.read("environment.json").decode())

# create an environment object (a combination of env vars and json metadata)
env = Environment.from_json(archive.read("environment.json").decode())

# get a site-packages directory (from env var or via build id)
site_packages = cache_path(archive, env.root, env.build_id) / "site-packages"
# get a site-packages directory (from env var or via build id)
site_packages = cache_path(archive, env.root, env.build_id) / "site-packages"
else:
# not in zip file, now it is in a directory
parent_dir = Path(os.path.abspath(sys.argv[0])).parent
env = Environment.from_json(open(parent_dir / 'environment.json').read())
site_packages = Path(parent_dir / 'site-packages')

# determine if first run or forcing extract
if not site_packages.exists() or env.force_extract:
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4 changes: 4 additions & 0 deletions src/shiv/builder.py
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Expand Up @@ -48,6 +48,10 @@ def iter_package_files(package: Union[str, ModuleType]) -> Iterator[Tuple[Path,
# zipapp __main__.py template
MAIN_TEMPLATE = """\
# -*- coding: utf-8 -*-
# add current path to sys.path for module search
import sys
sys.path.insert(0, '.')

import {module}
{module}.{fn}()
"""
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